A new analytical technique for determining actinides in molten salts is proposed, which combines information from electrodeposition with the output of an alpha particle detector. This technique requires a thin actinide layer to be deposited on metal substrate. Electrodeposition of a thin thorium layer from molten LiCl-KCl onto stainless steel and nickel plates is reported in this paper using chronoamperometry, chronopotentiometry, and repeating chronoamperometry. Repeating chronoamperometry was demonstrated as the most effective method for depositing approximately a 1 mu m thick thorium metal layer on substrates. The effect of thorium concentration on deposition time was also determined. Re-usability of the detectors was shown via demonstrating the anodic stripping of the deposit verified by surface analysis (SEM-EDS). (C) The Author(s) 2017. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. All rights reserved.